Is it a roast/baked ham, or just slices of ham cooked on their own?
If it is a 'joint' of ham that has been simmered/cooked already in a pot, and finished off in the oven with a brown sugar/mustard/clove glaze, then I would just have some roast veg (carrots, parsnips, butternut squash) all chopped to the same size and roasted, and add some gravy. Some dauphinoise potatoes would be perfect also.